Coupler lever lock



FIG. 1 is perspective view of a coupler lever lock showing my new design, shown in its environmental use;

FIG. 2 is a perspective view thereof;

FIG. 3 is rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a front elevational; view thereof;

FIG. 8 is a top, left and front perspective thereof, shown in an unlocked position with the cap separated from the lock; and,

FIG. 9 is a top plan view thereof, of FIG. 8.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a coupler lever lock, as shown and described. 